Finding the Fourth Proportional to 131,643.63, 181,668.02 and 71,214.08
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Solution
The fourth proportional to 131,643.63, 181,668.02 and 71,214.08 is: 98,275.32
Step by Step Solution
- Step 1: Write the proportion equation
131,643.63 : 181,668.02 = 71,214.08 : x - Step 2: Convert to fraction form
131,643.63/181,668.02 = 71,214.08/x - Step 3: Cross multiply
131,643.63x = 181,668.02 × 71,214.08 - Step 4: Simplify right side
131,643.63x = 12,937,319,645.31 - Step 5: Solve for x
x = 12,937,319,645.31/131,643.63 - Step 6: Final answer
x = 98,275.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.